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Legal Contingencies	9 Months Ended
Legal Contingencies	Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Legal Contingencies	(7) Legal Contingencies The nature of our potential exposure to legal contingencies is described in our 2018 annual report on Form 10-K in Note 10 of the Notes to Consolidated Financial Statements. As of September 30, 2019, there were no litigation matters that we consider to be probable or reasonably possible to have a material adverse outcome.